Table 3: Properties of the narrow cores observed in the Fe II 5169 lines of five shell stars. The resolving power of UVES was R=80 000, see Sect. 2 for H EROS and F EROS. The stellar radial velocities $v_\star$ were taken from the General Catalogue of Radial Velocities (Wilson 1953, GCRV) and its revised edition (Evans 1967), respectively. All numbers are given in km s^-1.
Star instr. resolut. FWHM $_{\rm shell}$ $v_{\rm shell}$ $v_\star$

EW Lac H EROS 15 20 -15 -11

$\psi$ Per H EROS 15 17 0 -1

o Aqr F EROS 6.3 9.1 9.0 12

$\omega$ Car F EROS 6.3 9.6 0.7 7

$\beta$ Mon A UVES 3.8 8.4 18.6 20

**Table 3:** Properties of the narrow cores observed in the Fe II 5169 lines of five shell stars. The resolving power of UVES was R=80 000, see Sect. 2 for H EROS and F EROS. The stellar radial velocities $v_\star$ were taken from the General Catalogue of Radial Velocities (Wilson 1953, GCRV) and its revised edition (Evans 1967), respectively. All numbers are given in km s^-1.
Star	instr.	resolut.	FWHM $_{\rm shell}$	$v_{\rm shell}$	$v_\star$
EW Lac	H EROS	15	20	-15	-11
$\psi$ Per	H EROS	15	17	0	-1
o Aqr	F EROS	6.3	9.1	9.0	12
$\omega$ Car	F EROS	6.3	9.6	0.7	7
$\beta$ Mon A	UVES	3.8	8.4	18.6	20

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